| 2023 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 2012 Hardiness Zone: | Zone 8b: 15°F to 20°F Zone 8a: 10°F to 15°F |
| 1990 Hardiness Zone: | Zone 8a: 10F to 15F |
| Average First Frost Date: | Oct. 21 - Oct. 31 |
| Average Last Frost Date: | Apr. 21 - Apr. 30 |
| Koppen-Geiger Climate Zone: | Csb - Warm-Summer Mediterranean Climate |
| Ecoregion: | 3a - Portland/Vancouver Basin |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 98629 - La Center, WA | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 33 | 34 | 37 | 40 | 45 | 49 | 53 | 52 | 49 | 42 | 38 | 33 | 42 |
| Avg Max Temp (°F) | 46 | 50 | 55 | 60 | 67 | 72 | 78 | 79 | 75 | 64 | 52 | 45 | 62 |
| Avg Precip (In.) | 7.11 | 5.87 | 5.23 | 3.83 | 3 | 2.18 | .95 | 1.27 | 2.2 | 4.11 | 7.55 | 8.15 | 51.45 |